Constant-ON state high side switch circuit
US7671665B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2008 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Nov 13, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/0406
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An electrical switching circuit for controlling current flow to an electrical load from a primary power source with a first electrical potential difference relative to a circuit ground comprising a primary energy storage device with a low side coupled to the electrical load, a secondary electrical energy storage device with a high side and a low side, a controllable electrical switch that toggles the low side of the secondary energy storage device from the circuit ground to the low side of the primary energy storage device, a primary unidirectional current gate coupled between the high side of the secondary energy storage device and the high side of the primary energy storage device to let current flow from the secondary energy storage device to the primary energy storage device when the potential difference of the high side of the secondary energy storage device is higher than the high side of the primary energy storage device, a secondary unidirectional current gate coupled between a secondary power source with an electrical potential difference of at least the predetermined potential relative to the circuit ground and the high side of the secondary energy storage device to let c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.